小间距钢梁混凝土空心楼盖变形试验研究

Study on Deformation of Small Spacing Steel Concrete Hollow Floor

为研究小间距钢梁混凝土空心楼盖弹性阶段协同工作机理和变形,通过原结构1/2缩尺模型试验和数值分析,对无板模型和有板模型进行竖向加载试验,分别得到无板、有板模型在使用阶段的竖向变形特征.通过试验结果和和理论分析,得出在使用阶段混凝土空心板对钢结构楼盖的刚度和抗变形能力有明显的提高,等效刚度提高了47%;提出了小间距钢梁现浇混凝土空心楼盖变形计算方法,该计算方法可供此类楼盖变形验算参考.

For purpose of studying coordination and deformation mechanism in steel concrete,we shrinked the structure to its 1 / 2 size,and vertical loading test was carried out to get vertical deformation characteristics. All of results show that the use of elastic concrete hollow slab for the steel structure floor can improve 47% stiffness.